You probably wont want the proxy to be bigger than a card, because in this case, youll either be able to see the proxy through the card or have to be more precise at cutting the prints
Bears, Treefolk, Druids, Hydra and Squirrels are all green-based creature types that don't have the best card draw options available to them
It may not be an infinite mana combo, but it should give me as many attacks as I need if nobody has any interaction to stop me
You can also watch the cast of Detective Pikachu play "Who's That Pokmon?" And hear why Ryan Reynolds wanted to play the role of Detective Pikachu
Honorable Mention #2 Spirit of the Labyrinth There are a lot of people at the casual table who like to draw a ton of cards, and this shuts them down hard
Imagine stealing this effect with Etali, Primal Storm or Fallen Shinobi